Ross M
Environ Health Perspect. 1974 Dec;9:123-4. doi: 10.1289/ehp.749123.
A brief discussion of three types of geologic occurences of asbestos-like minerals is given. The problem of mining ore free of asbestos is considered.
简要讨论了石棉状矿物的三种地质赋存类型。还考虑了开采不含石棉矿石的问题。